<template>
  <div id="wrapper" class="login-page">
    <div id="login_form" class="form">
      <form class="register-form">
        <input type="text" placeholder="用户名" id="r_user_name"/>
        <input type="password" placeholder="密码" id="r_password"/>
        <input type="text" placeholder="电子邮件" id="r_email"/>
        <button id="create" @click="check_register()">创建账户</button>
        <p class="message">已经有了一个账户? <a href="#" @click="toggle()">立刻登录</a></p>
      </form>
      <form class="login-form">
        <input type="text" placeholder="用户名" id="user_name"/>
        <input type="password" placeholder="密码" id="password"/>
        <button id="login" @click="check_login()">登　录</button>
        <p class="message">还没有账户? <a href="#" @click="toggle()">立刻创建</a></p>
      </form>
    </div>
  </div>
</template>

<script>
  export default {
    name: "Index",
    methods: {

      check_login() {
        var name = $("#user_name").val();
        var pass = $("#password").val();
        if (name == "zll" && pass == "zll") {
          alert("登录成功！");
          $("#user_name").val("");
          $("#password").val("");
        }
        else {
          $("#login_form").removeClass('shake_effect');
          setTimeout(function () {
            $("#login_form").addClass('shake_effect')
          }, 1);
        }
      },
      check_register() {
        var name = $("#r_user_name").val();
        var pass = $("#r_password").val();
        var email = $("#r_email").val();
        if (name != "" && pass == "" && email != "") {
          alert("注册成功！");
          $("#user_name").val("");
          $("#password").val("");
        }
        else {
          $("#login_form").removeClass('shake_effect');
          setTimeout(function () {
            $("#login_form").addClass('shake_effect')
          }, 1);
        }
      },

      toggle() {
        $('form').animate({
          height: 'toggle',
          opacity: 'toggle'
        }, 'slow');
      }
    }
  }
</script>

<style>

  @import url(https://fonts.googleapis.com/css?family=Roboto:300);

  .login-page {
    width: 360px;
    padding: 8% 0 0;
    margin: auto;
  }

  .form {
    position: relative;
    z-index: 1;
    background: #FFFFFF;
    max-width: 360px;
    margin: 0 auto 100px;
    padding: 45px;
    text-align: center;
    box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.2), 0 5px 5px 0 rgba(0, 0, 0, 0.24);
  }

  .form input {
    font-family: "Roboto", sans-serif;
    outline: 0;
    background: #f2f2f2;
    width: 100%;
    border: 0;
    margin: 0 0 15px;
    padding: 15px;
    box-sizing: border-box;
    font-size: 14px;
  }

  .form button {
    font-family: "Microsoft YaHei", "Roboto", sans-serif;
    text-transform: uppercase;
    outline: 0;
    background: #4CAF50;
    width: 100%;
    border: 0;
    padding: 15px;
    color: #FFFFFF;
    font-size: 14px;
    -webkit-transition: all 0.3 ease;
    transition: all 0.3 ease;
    cursor: pointer;
  }

  .form button:hover, .form button:active, .form button:focus {
    background: #43A047;
  }

  .form .message {
    margin: 15px 0 0;
    color: #b3b3b3;
    font-size: 12px;
  }

  .form .message a {
    color: #4CAF50;
    text-decoration: none;
  }

  .form .register-form {
    display: none;
  }

  body {
    background: #76b852; /* fallback for old browsers */
    background: -webkit-linear-gradient(right, #76b852, #8DC26F);
    background: -moz-linear-gradient(right, #76b852, #8DC26F);
    background: -o-linear-gradient(right, #76b852, #8DC26F);
    background: linear-gradient(to left, #76b852, #8DC26F);
    font-family: "Roboto", sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  .shake_effect {
    -webkit-animation-name: shake;
    animation-name: shake;
    -webkit-animation-duration: 1s;
    animation-duration: 1s;
  }

  @-webkit-keyframes shake {
    from, to {
      -webkit-transform: translate3d(0, 0, 0);
      transform: translate3d(0, 0, 0);
    }

    10%, 30%, 50%, 70%, 90% {
      -webkit-transform: translate3d(-10px, 0, 0);
      transform: translate3d(-10px, 0, 0);
    }

    20%, 40%, 60%, 80% {
      -webkit-transform: translate3d(10px, 0, 0);
      transform: translate3d(10px, 0, 0);
    }
  }

  @keyframes shake {
    from, to {
      -webkit-transform: translate3d(0, 0, 0);
      transform: translate3d(0, 0, 0);
    }

    10%, 30%, 50%, 70%, 90% {
      -webkit-transform: translate3d(-10px, 0, 0);
      transform: translate3d(-10px, 0, 0);
    }

    20%, 40%, 60%, 80% {
      -webkit-transform: translate3d(10px, 0, 0);
      transform: translate3d(10px, 0, 0);
    }
  }

</style>
